Finishing machine



Jan. 8,1935. w. HAMANN FINISHING MACHINE Filed Nov. 9, 1929 2 Sheets-Sheet 1 I sistance. To thisend, the illustrated tool hold.-

'35" to resist effectively rotative movement of theto'ol on the carrier,-.and .a resilient latch is arranged trated inFig: 1:. with parts removed;

' er; bymeansof the mechanism describ'edhere-f 65:

further feature of the invention, in the illustratplication Serial No. 406,350, filedon-November 11,

are.'more fully pointed out in the following'de tatably moun'teda tool holder 18 arranged to carlocking ofithe toolholder 1-8to the shaft 10 is efin the end: of the shaft 10 and which is arranged tor posed'lugsi22 on theholder are held within-com- 7 5 in the periphery of a driver 26 which is secured to the shaft 10 by means of a key 28. The key is retained in position by means of bolts 30 which, when tightened upon the key, lock the driver 26 securely to the shaft and prevent it from mov ing either about the shaft or axially thereof. The recesses 24 are formed in wear resisting liners 32.which are. rivetedto. the peripheryof the driver-26, as illustrated inf'FigI, 1. Itwill be noted from Fig. 2 that the sides of the lugs 22 which engage the sides of the liners 32 are oblique to each other and therefore, provide awedge fit between the holder 18 and the driver 26 when they are in theposition illlustratedin Fig. 2 where they are I lowniflocking engagement. The tension of yield toward and away from. the tool carrier; and he ;spring 20 which thus urges the holder 18 toarranged to engage a fiat onthecarrier ,ofqgreatv ard the driver 26 is transmitted thereto through er Width than that of the key-in masseuse-to- *an'ariti-friction' bearing comprising a series of allow a slight axial movement of the tooh 31 balls 351 interposed between a raceway 36 on the By the invention disclosed and claimed in apouter end of the holder 18 and a cooperating raceway 38 "through which extends a" flanged bushing 40which supports oneteird' of ith'e spring 20 on a and its carrier as is practicable to minimize wear at the tool connection, while still providing for easy removal of the tool.

With this in view and in accordance with a ed edge-finishing machine the tool holder is rotatably mounted and means is provided which is constructed and arrangedto permita predetermined limitedrotatiige movement of the tool-car;- rier relatively to the holder against yielding reer is provided with yielding means arrangedtoengage-the carrier for the edge burnishing'to'ol-to resist rotative movement of .thetool. \Asliere' shown, this means comprises af'keyg 1929;in the sname-tof Irving E. Booth,-advantageistake'n, of .theyielding mounting of the tool car-f rier above. described to permit the tool to :follow' thesole edge, while providing an improved 'con-x nection between the tool. and the carrier which insuresagainst anylOQseness or relative movement .atithatplac'e; .:Con"sidered inanother as p'ect, the present invention provides, in combination witha tool carrier mountedfor yielding axial and rotative movement, still. further improved means for. releasably securing a 'burnishing tool 'tight1y..to1the. tool carrier; Tothis end,'.the tool carrierof theillustrated machine has a shoulderarranged to contact with a fiattenedsideof a tool:

-i To initiate a' half revolutionof the tool'holder l8xit isreleased from looking engagement with the driver 26 and, itsrotation'is' started by a mechanism .now'to be describedfFroin -fone side of a housirig 46j 'whichinay be'attached to the frame the .upper 'end' of'whi'ch is 'fixe'da lever 52jand carryingt-at its lower end another lever 54 "supporting fat bne T extremity? a pad 56 adapted to be engaged by the operatorshand or arm. The 16- to resist axial; displacement of ithe-tool on the carrier. "1 :5; x f '1 2 z. These and othernovel features of the invention which ar'e-arrang'ed to contact'first with the chamfered faces 62 of key holder's64 fixed'to the tool holder-"and later'to be described and subsequently with-oblique faces66 on the lugs 22 of the scriptionandi, illustrated in the accompanying tool hold'e'r '1-81 It'willnow-be apparent'that when drawingsiiin which i '1 Fig".- 1.is aside elevation, partlyin section,:of an edge burnishing-machine in which the present invention'is embodied;

Fig. 2;,is a, plan view of the machine.

54" in the directionindicated by the arrow in Fig. 2 the rolls- 38; 60 will be'brought'into'engage ment with -the faces'62on'f'th'e key holders 6%. as il1us-' As-th-ejpad'is moved-furthertdmove the tool holderf'outwardly'alon'g the'fsh'aft l;'the lugs 22 are removedfrom locking-engagement within the liners'32 andj as-soonas the corners of the lugs 22 adjacent to theoblique faces '62 pass beyond the corresponding corners ;of the fliners 32, and owing to the obliquity ofthefaces-621and 66 the pressure'ofthe rolls58 and 60 is exerted in a direction'such th'at onecomponent' of the pressure is utilized wi part an initial rotation to thetool holder 18 in -the- 'direction]indicated by the arrow, seen in' Fig. 2, carrying thefaces of the lugs 22 well on to the-periphery 6i thedriver 26. I

From-this 'poinitithe oscillation of the shaft 10 is'u'tilize'd to rotate the tool-holder through substantiallyonefhalf a revolution, thereby to cause :Fig. 3 is-an enlarged section taken on the line IIIg-JIIIinFig. 1; 3

Fig; 415 a. sectionon thelihe IVIV. in Fig. 1;

:Fig. is afperspective viewof theimechanism forinitiating the. rotation of the toolholder.

' A shaft is rotatably mounted in abearing 12 supportedby the machine frameil. and may be oscillated .by anysuitable means such, for exam-l ple, as that illustrated'in Letters .Patent :of .the United States'No. 1.743.480, granted January-14; 1930, in the'name'of E. J'. Ray; J On its outer end the shaft 10. carries a bushing 16' on which is r0,-v

ry: .two. oppositely. disposed tools, which-hom ing this is arranged to' employfthe increase in energybf .the spring'20'resulting from the holders bein ved outwardly along the shaft. .This means, as I illustrated, comprises inclined. surf aces 68,;370011 theiperipheral face of "the driver. 26 connecting the .riotches in the liners, 32 and, as shownin Fig-.2, the.surfaces aredisposed obliquelyboth to the direction of oscillation of the driver inafter, .may be locked in non-turning relation with the shaft .10 and also may berotatedthrough a'half? revolutionto' cause an. interchange of the tools carriedizbyit in; the manner and for-the pur-i pose-well known by those skilled inthisartz. The

fected by meansof a-spring .20housed in arecess urgethe holdery18 axiallyjof the shaft so that op:

against the driver by the .tool; holder.

Asazpres l l' lo .th-is.constructiomeaeh osci1laplemen't'al and diametrically. opposite recesses 24;-

cross-bar 42. The other e'nd'of the springis sup-' 14in any desired manner, extend "brackets 48 in which'is? rotatably mounteda rock shaft 50, to-

vers. 52 and 54lrotatably support rolls' 58 and-60 the-pad 56is pushed'tooperate the levers 52 and an interchangeoif' the' tools. jTh'efmeans for doand to. .the direction ,pf: the pressure exerted tio'n of the drivertinxthat direction amen-tends to move the holder taxiallyioutwardly along,the shaft owing to theobliquityagof-i the inclinedsurfaces 68, 70, resultstinthe deliverygofafrictional impulse to similarly inclinedv surfaces l'lleon :th'e

direction indicated'inFig m Onthefoth'er hand;

during the ioscillations s'of the driver in the other direction, the holdenf ind the driver 26, slides towards 'the lowermost 'p'or tionsof the inclined surfaces 168,170 on the driver;

considered longitufinally of its axis :of i oscillation, owing to the inertia of :the" holdenwl'lichutends to retain it in its state of it motioni'as indicatem it will now be' apparentthah as soon as the holdeif is released Jfroms locking engagement with ".xthe' driver and receives an'initial rbtation resulting i from the operation of the levers 52 and 54as hereaxial 'and rotative f movement inbefore described, the inclined; surf aces" of t the driver 26" operate, conjunction withthe sur faces J71 of the lugs 22 T on the holder urge'drto ward the driver by the spring 20550 1 astto cause I the initiation of a half-"revolution :of the holder resulting'in a transfer of the tool=last inino'pera' is presented theretoim' H Theledge; burnishing tools are :re tained on pins tive position 'to that position in which the work 72, 74 projecting from the outer endsof thecarriers" 76, 78- which are so -mounted in {the tool holder l8 as to be capable ofayieldi 1 y resisted n must-rated carriers '76, 78 are urged-outwardly 'f thetool holder by means of springs=80,:282 one ofthe ends of which bear on the-toolholder and th'eother ends thereof i being seated at :the bottom of i recessesin the carriers, as illustrated in Fig.1; To allow a limited and yieldinglyresisted rotative movement of the carriers with respect to thehold or, each carrier has associated tlierewith a 'key 84 (Figs; 3 and 4 1 arranged: to I engagea fiat "536 on each carrier and is yieldingly held message m'ent therewith by means ofal'spring 88 which is restrained from all 1? movement except that in a plane perpendicular to; the axis of the carriers in the key holder 64. It will nowbeapp'arentfrom,

a consideration of Figs. 3 and 4 that when the carriers are rotated with respect" to *the -holder a corner ofthe fiat86 willengage the key84, rotat ing itjinits holder about its end farthest"removed from the point of contact between th'e carrier and-thekey; and when-the back ofithe key r'eaches the adjacent'wall of thekey holde r its movement ispositively limitedj As indicatedin Fig. l 3;, 'sho'ula ders 90, 92 of the receSSesin the carriers of whichthe-flat 861s the base, 'areseparated byadistance substantially greater-"than the width of the'key 84. Before anyw ork is presentedio the toolg the springs 80, 82 (urge the respective (carriers i cut wardly of the holder sothat the shouldere 92' thereon abut a side of the key 84. In this inanner outward displacement of the tools is limited.

Similarly; when a piece of work is'fheld against the tool in operative position and isurged to mo've ts rotation relatively to g g 3 102, arra'ngediito lembraceathe"oppositesides of 'the tool. 'iAiiresilientzlatch 104 is also supported at thelouter endof each 'carrierand has abent end arrangedf'tcengage within a notch on the burnishing t'ool, asuillustratedin 1, thereby re- ,1.

leasably :to' secure the moron the carrier and to preventwits :axial displacement therefrom except wheniremoved by the operator." A finger 1061s also fixed to the end ofv the carrier and h% a shoulder 108arran'gedto engage a flat on the side of that'common type of tool having a substantially cylindricals'hank, thereby efiectually'tc resistthe 1 mainstream atool on the carrier. t'flaving described my invention, what I claim as new and'desire to secure by Letters Patent of the Uiiitedistates is:-1 v

; In "a finishing machine; in combination, an 5 oscillating shaft, altcol holder'rdtatablymounted on said shaft,' a; driver' fixed to said shaftand having-7an+inclined face, means for :releasably holding saidtool holder'in locking engagement witl'rsaidv driver, and means for moving said: tool holder out of locking engagement ,with said driver and i'nto enga'gement withits inclined face, said first-mentioned means, said driver and said holder being constructed and arranged to'utilize the, os-'- cillations of said shaftinone, direction to impart 1t. l l c a 3 2.1111 ak finishing machine, in combination, an oscillating shaft,-awholderi,for a plurality of tools rotatablymountedon saidshaft, said shaft and said holder-havingcooperating faces obliqueto the direction ofc'roscillation of the shaft, and means for holding said faces in abutting relation, whereby the oscillationsof the shaft in one dishaftrzthereby causing an interchange of tools.

: 3 In awfinishing rmachine, in .combination, an

oscillating shaft, aholder forra"pluralityof tools rotatably mounted onsaid shaft,imeans fixed to a 'successionof impulses to 'the holderto rotate,

rection are utilized 'to rotate the holder aboutthe said shaft. foridriving said :holder," said drivin means and said holder having abutting faces disposed obliquely to the 3 direction of oscillation of -the 'sliaftaand means :fohholding said faces in eiigageinentwhereby theoscillationsof the shaft,

in one directiontare utilized to ro'tatethe holder about the shaft thereby, causing an interchange offtools. i U

f Ar In 1 a finishing machine; combination, an oscillating shaft} a holder fora plurality of: tools rotatably mounted on said'shaft, means for dIlVr" ing said. holder fixed to said'shaft, said driving means and csaid': holder whaving abutting faces disposed obliquely to :the direction of oscillation ofuithe shaft, and means for. yieldinglyholding said faces-together-whereby the oscillations of the shaft: in='one direction are utilized to rotate a the holder about the shaft thereby interchange of -tools.;,

oscillatingshaft, a tool-holder rotatably mounted on, said shaft, a driver fixed to said shaft having aff'ace .d isiaosed'obliquely to the direction of oscillationof the shaft, notched connections between slaidfdriver and tool holder for releasably ocki hem tesei la im r s e said tool holderout of locking engagement with saidfdriver and into engagement with its oblique face whereby the oscillationslof said shaft shaft; 7

'SJIn a1 finishing machine; in combination; an

causing an i .e0- $5 In a finishing machine, in combination, an

70, in onedirection are utilizedto impart a succession of imp'ulses to the holder to rotateitafter it is released from" looking engagement with said holder and driving means in engagement, and

faces on said driving means between the'notches oblique'to the direction. of oscillation of the shaft arranged in cooperation with said yielding means I to utilize the oscillation of the shaft to rotate the holder about they shaft when the holder is released from locking engagement with the driving means.

-'7. In a fininshing machine, an oscillating shaft, a tool holder rotatably mounted on one end of said. shaft and having a plurality of angularly spaced tools thereon,:yielding;.means for urging said holder axially of "said shaft to hold the shaft and the tool holder in locking engagement, means for. releasing said. holder" from locking engagement with said shaftand for causing an increase in'Jthe potential. energy of said yieldingmeans, and means foremploying said increase in energy of. said -yielding means and the oscillation of said shaft to cause a relative rotation of said tool holder and said shaft through the angle between successive tools on the holder.

' 8. In a finishing. machine, an oscillating shaft, a. tool-holder rotatably'mounted on the end of said shaftand having a pluralityof angularly spaced-tools thereon, yielding means for urging said holder axially of said shaft to hold them in locking engagement, operator-controlled means'for'releasing said holder from locking engagement with said shaft and for causing an in-,

crease in the. potential energy-of said yielding means, .and means employing said increase in energy of said yielding means and the oscillations of said shaft .to' cause a relative rotation of said tool holder and said shaft through the angle between successive tools on the holder.

a holder for a plurality of tools mounted for rotat-ion on the end of saidshaft whereby said tools may be brought successively into operative position, connections. between said holder and said .shaft comprising means for releasably locking them, and means arranged yieldingly to hold said holder and shaft in locked relation, and means for releasing saidtoolholder from said shaft and for initiating a rotation of the tool holder on the shaft, said connections also comprising a driving surface shaped and arranged better to utilize the oscillations of the shaft in one direc-I tion than in the other to complete the rotation of "the tool holder in order tointerchange the tools." v

10. In a finishing machine, an-oscillating shaft,

' a holder'for a plurality of tools mounted for retation on the end of said shaft whereby they may arranged to impart aninitial rotation to said holder, said connections between the holdenand the shaft also, comprising a driving surface shaped and arranged better to utilize the osciI-- lating'motion of the-shaft in one direction than in the. other inorder to rotate the tool holder thereby causing an v.interchangeof the tools.

11. In a finishing machine, an oscillating shaft,

a holder for a plurality of tools mounted for rota- I tion on the end of said shaft whereby said tools may vbe'successively broughtinto operative position, driving means on said shaftfor causing said tool holder to oscillate therewith, resilient means for holding said'tool. holder releasably in locking engagement with said driving means, means for releasing said tool holder from locking engagement with said driving means and for imparting aninitial rotation thereto, and means on said driving means comprising an inclined plane for utilizing the pressure of said resilient means and the oscillations of said driving means to rotate the tool holderv causing'an interchange of the tools. 1 I

12. In a finishing machine, a shaft, means for oscillating the shaft about its axis, a tool holder rotatably mounted on said shaft, driving means for imparting the oscillations of the shaftto the toolholder having notchesjin its driving surface the portions of which connecting successive notches are oblique'to the direction of oscillation, an extension on said holder adapted for engagement within a notch in said driving means, a spring arranged to urge said extension on\the holder within, one of said notches, and means for moving the extension on said holder out of the notches andinto engagement with an oblique face on said driving means. i

13. In a finishing machine,-a sole edge treating tool, a holder, means rotatably mounted in said holder and adaptedand arranged to carry said tool atan end thereof, and-means constructed and arranged yieldingly to allow a predetermined means constructed and arranged to resist yield- 9. In. a finishing machine, an oscillating shaft,

ingly rotative movements of the last-mentioned means .in the holder.

resiliently resisting rotation and for limiting the axial displacementof said carrier.

16. In a finishing machine, a tool holder having a recessed head, a spindle arranged for en'- gagement within therecess in said holder constructed and arranged to retain a sole edge treat ing tool on its outer end, resilient means insaid recess for urging said spindle outwardly of said holder, and connections between said holder and said spindle constructed and arranged to resist resiliently axial and rotative movements of" said spindle.

17. In a finishing machine, an oscillating tool holder having a recessed head, a spindle slidably mounted in said head constructed and arranged to hold an edge treating tool at its outer end,

and connections between said holder and said. spindle for allowing a limited relative axial and rotative movement therebetween.

Y 18. In a finishing machine, an oscillating toolholder having a recessed head, a tool retaining spindle mounted for limited axial and rotative movement in the recess. ofosaid head, and a spring-pressed key. supported by saidholder and engaging said spindle, said spindlebeing arranged to resist yieldingly rotation of the spindle and to .limit its axial movement.

19. In a finishing machine, an oscillating tool holder having a recessed head, a tool retaining spindle slidably mounted in the recess in said head, and a key arranged to yield towardand away from the axis of said spindle, to resist rotation thereof in said holder, and also to limit the axial movement of the spindle.

20. In a finishing machine having a tool holder arranged to allow an axial and rotative displacement of the tool, means for resiliently resisting and positively limiting axial and rotative displacements thereof. 1

21. In a finishing machine havingan oscillating tool holder, a spindle mounted to slide and to rotate in said holder, and meanscomprising I a yielding key arranged to engage a flat on said spindle constructed and arranged yieldingly to resist and positively tolimit sliding and rotative movements of said spindle in said holder. 1 22. In a finishing machine, an oscillating too holder having a recessed head, a tool retaining spindle mounted for limited axialand rotative movement in the recess of said head, and a springpressed key supported by said holder and arranged to engage a flaton said spindle thereby ,to resist rotation of the spindle.

K 23. In a finishing machine, an oscillating tool holder having a recessed head, a tool retaining spindle mounted for axial and rotative movement in the recess of said head, a flat on said spindle,

and a key yieldingly supported by said holder and narrower than said fiat constructed and arranged to allow but yieldingly to, resist axial and rotative movements of said spindlein' said head and positivelyto limit them. l

24. In a finishing machine, the combination of a tool holder, a tool carrier mounted for axial and rotative movements in saidholder, means for yieldingly resisting said movements, and means for releasably securing a burnishing tool on the end of said carrier in non-turning relation comprising a resilient latch arranged to resist axial displacement of the tool on the carrier, said carrier having a shoulder arranged to contact with a flattened side of said tool effectively to resist r0 tative movement of the tool on the carrier.

25. In a finishing machine, a holder for a plurality of tools, means foroscillating the holder tion of its oscillation and having notches at the extremities of said oblique surface, said holder having lugs arranged normally to be received in said notches, means for urging the tool holder into engagement with the oscillating means, and operator-controlled means for moving thetool holder so as to cause the lugs to be removed from said notches and to engage the said oblique surface on the operating means. i

2'7. In a finishing machine, a tool holder, an

oscillating support for said holder, and means for urging said holder into engagement with said.

support, saidsupport having a tool-holder-engagping surface which is oblique to thedirection of pressure of the tool holder thereagainst and having notches at each end of said oblique surface to receive a partof the tool holder.

28. In a finishing machine, a tool holder having a lug, an oscillating support on which said holder is mounted for axial and rotative movement,

yielding means forurging said holder axially into I engagement with said support, said support having a tool-holder-engaging surface which is oblique to the direction of the pressure, of the tool holder thereagainst and having notches at each end of said surface to receive the lug on the tool holder, and operator-controlled means mounted to act upon said tool holder against the resistance of said yielding means to provide a pressure exerted in a direction such that one component of said pressure is utilized to remove the lug from a notch and the other component causes the holderto rotate whereby the lug is moved on to the oblique surface of said support.

29. In a finishing machine, a tool holder, means for oscillating said holder comprising an oscilla'ting shaft on which said holder is rotatably supported and a driver fixed to said shaft for imparting its oscillations to the holder, yielding means for urging said holder against said driver, said driver having notches shaped and arranged to receive a part of the tool holder, and an annular surface connecting said notches and disposed obliquelywith respect tothe direction of pressure of the holder against the driver.

30. In a finishing machine, a tool holder having a lug, means for oscillating said holder comprising an oscillating shaft on which said holder is rotatably supported and a driver having notches shaped to receive said lug and fixed to said shaft for im-' parting its oscillations to the holder, means for yieldingly urging said holder against said driver, said driver having an annular surface connecting its said notches and disposed obliquely with respect to the direction ofpres'sure of the holder thereagainst, adapted to engage said lug mounted for movement in a direction oblique tothe surface of the lug which it engages whereby the holder is moved into engagement with said oblique surface after it is removed from a notchin said driver,

' WILLIAM and operator-controlled means 

